:root {
  --color-primary: #1f3a5f;
  --color-primary-light: #2c5282;
  --color-accent: #f2b134;
  --color-accent-soft: #f7c95c;
  --color-bg: #f5f7fb;
  --color-bg-alt: #ffffff;
  --color-surface: rgba(255, 255, 255, 0.72);
  --color-surface-solid: #ffffff;
  --color-text: #1a2433;
  --color-text-soft: #4a5568;
  --color-text-muted: #718096;
  --color-border: rgba(31, 58, 95, 0.12);
  --color-shadow: rgba(31, 58, 95, 0.1);
  --gradient-hero: linear-gradient(135deg, #1f3a5f 0%, #2c5282 45%, #3a6ea5 100%);
  --gradient-accent: linear-gradient(135deg, #f2b134 0%, #f7c95c 100%);
  --gradient-card: linear-gradient(160deg, rgba(255, 255, 255, 0.9) 0%, rgba(245, 247, 251, 0.7) 100%);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(31, 58, 95, 0.06);
  --shadow-md: 0 8px 24px rgba(31, 58, 95, 0.1);
  --shadow-lg: 0 16px 48px rgba(31, 58, 95, 0.16);
  --blur-glass: blur(16px) saturate(160%);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --max-width: 1200px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 72px;
}

[data-theme="dark"] {
  --color-primary: #9db8dc;
  --color-primary-light: #b8cce8;
  --color-accent: #f2b134;
  --color-accent-soft: #f7c95c;
  --color-bg: #0e1521;
  --color-bg-alt: #16202f;
  --color-surface: rgba(22, 32, 47, 0.72);
  --color-surface-solid: #16202f;
  --color-text: #e8eef7;
  --color-text-soft: #b6c2d4;
  --color-text-muted: #8b9ab0;
  --color-border: rgba(157, 184, 220, 0.16);
  --color-shadow: rgba(0, 0, 0, 0.4);
  --gradient-hero: linear-gradient(135deg, #0a1220 0%, #142337 45%, #1c3450 100%);
  --gradient-card: linear-gradient(160deg, rgba(30, 44, 64, 0.85) 0%, rgba(18, 27, 41, 0.7) 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(242, 177, 52, 0.08) 0%, transparent 38%),
    radial-gradient(circle at 88% 4%, rgba(58, 110, 165, 0.1) 0%, transparent 42%);
  background-attachment: fixed;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover,
a:focus-visible {
  color: var(--color-accent);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.4rem); }

p {
  margin: 0 0 1em;
  color: var(--color-text-soft);
}

ul, ol {
  margin: 0 0 1.2em;
  padding-left: 1.4em;
  color: var(--color-text-soft);
}

li {
  margin-bottom: 0.45em;
}

li::marker {
  color: var(--color-accent);
}

blockquote {
  margin: 0 0 1.2em;
  padding: 1.1em 1.4em;
  background: var(--gradient-card);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

blockquote:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

blockquote p {
  margin: 0;
  color: var(--color-text);
  font-style: italic;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============ HEADER ============ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.brand-logo:hover {
  transform: scale(1.04);
}

.brand-logo svg {
  filter: drop-shadow(0 2px 4px var(--color-shadow));
  transition: transform var(--transition-base);
}

.brand-logo:hover svg {
  transform: rotate(-6deg);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .brand-name {
  background: linear-gradient(135deg, #f2b134 0%, #f7c95c 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

#main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

#main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

#main-nav li {
  margin: 0;
}

#main-nav a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-soft);
  border-radius: var(--radius-pill);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
}

#main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

#main-nav a:hover {
  color: var(--color-primary);
  background: rgba(242, 177, 52, 0.1);
}

#main-nav a:hover::after {
  width: 60%;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-search {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  overflow: hidden;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.site-search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(242, 177, 52, 0.2);
}

.site-search input {
  border: none;
  background: transparent;
  padding: 9px 16px;
  font-size: 0.875rem;
  color: var(--color-text);
  width: 180px;
  font-family: inherit;
  outline: none;
}

.site-search input::placeholder {
  color: var(--color-text-muted);
}

.site-search button {
  border: none;
  background: var(--gradient-accent);
  color: #1a2433;
  padding: 9px 18px;
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: filter var(--transition-fast);
}

.site-search button:hover {
  filter: brightness(1.08);
}

#theme-toggle,
#menu-toggle {
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-text-soft);
  padding: 9px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

#theme-toggle:hover,
#menu-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

#menu-toggle {
  display: none;
}

/* ============ MAIN / BREADCRUMB ============ */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 80px;
}

.breadcrumb {
  padding: 20px 0 8px;
}

.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.breadcrumb li {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "›";
  color: var(--color-text-muted);
  font-size: 1rem;
}

.breadcrumb a {
  color: var(--color-text-soft);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

/* ============ HERO ============ */
.hero-section {
  position: relative;
  margin: 8px 0 32px;
  padding: 48px 40px 40px;
  border-radius: var(--radius-lg);
  background: var(--gradient-hero);
  color: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 15%, rgba(242, 177, 52, 0.28) 0%, transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(247, 201, 92, 0.18) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

.hero-section::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px dashed rgba(242, 177, 52, 0.35);
  z-index: -1;
  animation: spin-slow 40s linear infinite;
  pointer-events: none;
}

@keyframes spin-slow {
  to { transform: rotate(360deg); }
}

.hero-carousel {
  position: relative;
  min-height: 320px;
}

.hero-slide {
  margin: 0;
  animation: fade-slide-in 0.6s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.hero-slide[aria-hidden="true"] {
  display: none;
}

.hero-slide h1,
.hero-slide h2 {
  color: #fff;
  margin-bottom: 0.5em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

.hero-slide h1 {
  background: linear-gradient(120deg, #ffffff 0%, #f7c95c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
}

.hero-slide p {
  color: rgba(255, 255, 255, 0.88);
  max-width: 820px;
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 1em;
}

.hero-slide .cta-button {
  display: inline-block;
  margin-top: 12px;
  padding: 13px 32px;
  font-size: 1rem;
  font-weight: 700;
  color: #1a2433;
  background: var(--gradient-accent);
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 20px rgba(242, 177, 52, 0.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.hero-slide .cta-button:hover {
  color: #1a2433;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 28px rgba(242, 177, 52, 0.55);
  filter: brightness(1.05);
}

@keyframes fade-slide-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.carousel-controls {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.carousel-controls button {
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-family: inherit;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

.carousel-controls button:hover {
  background: var(--gradient-accent);
  color: #1a2433;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(242, 177, 52, 0.4);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 8px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform var(--transition-base), background var(--transition-base);
}

.stat-item:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.14);
}

.stat-number {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-accent-soft);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat-item span:last-child {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.82);
  text-align: center;
}

/* ============ ANCHOR NAV ============ */
.anchor-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 900;
  margin: 0 0 32px;
  padding: 10px 14px;
  background: var(--color-surface);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
  scrollbar-width: none;
}

.anchor-nav::-webkit-scrollbar {
  display: none;
}

.anchor-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.anchor-nav li {
  margin: 0;
}

.anchor-nav a {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-soft);
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
}

.anchor-nav a:hover {
  background: var(--gradient-accent);
  color: #1a2433;
  transform: translateY(-1px);
}

/* ============ SECTIONS ============ */
main > section {
  position: relative;
  margin-bottom: 28px;
  padding: 36px 36px 32px;
  background: var(--gradient-card);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  animation: reveal-up 0.7s cubic-bezier(0.4, 0, 0.2, 1) both;
  animation-timeline: view();
  animation-range: entry 0% entry 30%;
}

@supports not (animation-timeline: view()) {
  main > section {
    animation: none;
  }
}

main > section:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(242, 177, 52, 0.35);
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

main > section > h2 {
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 22px;
}

main > section > h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  border-radius: 2px;
  background: var(--gradient-accent);
}

main > section > h3 {
  margin-top: 1.4em;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

main > section > h3::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(242, 177, 52, 0.2);
}

/* ============ AUTHOR BOX ============ */
.author-box {
  margin-top: 24px;
  padding: 22px 26px;
  background: linear-gradient(135deg, rgba(242, 177, 52, 0.1) 0%, rgba(58, 110, 165, 0.08) 100%);
  border: 1px solid rgba(242, 177, 52, 0.3);
  border-radius: var(--radius-md);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
}

.author-box h3 {
  margin-top: 0;
  color: var(--color-primary);
}

.author-box p {
  font-size: 0.92rem;
  margin-bottom: 0.6em;
}

.author-box p:last-child {
  margin-bottom: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ============ NEWS & ARTICLE CARDS ============ */
#news article,
#articles article {
  position: relative;
  margin-bottom: 16px;
  padding: 22px 24px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  overflow: hidden;
}

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

#news article:hover,
#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(242, 177, 52, 0.4);
}

#news article:hover::before,
#articles article:hover::before {
  transform: scaleY(1);
}

#news article h3,
#articles article h3 {
  margin-top: 0;
  margin-bottom: 8px;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

#news article:hover h3,
#articles article:hover h3 {
  color: var(--color-primary);
}

#news article p,
#articles article p {
  font-size: 0.92rem;
  margin-bottom: 0.6em;
}

#news article p:nth-of-type(1),
#articles article p:nth-of-type(1) {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

#news article a,
#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary-light);
  transition: gap var(--transition-fast), color var(--transition-fast);
}

#news article a::after,
#articles article a::after {
  content: "→";
  transition: transform var(--transition-fast);
}

#news article a:hover,
#articles article a:hover {
  color: var(--color-accent);
  gap: 10px;
}

#news article a:hover::after,
#articles article a:hover::after {
  transform: translateX(3px);
}

/* ============ FAQ ============ */
#faq details {
  margin-bottom: 12px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#faq details:hover {
  border-color: rgba(242, 177, 52, 0.4);
  box-shadow: var(--shadow-sm);
}

#faq details[open] {
  border-color: rgba(242, 177, 52, 0.5);
  box-shadow: var(--shadow-md);
}

#faq summary {
  position: relative;
  padding: 16px 52px 16px 22px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

#faq summary::-webkit-details-marker {
  display: none;
}

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-accent);
  background: rgba(242, 177, 52, 0.12);
  border-radius: 50%;
  transition: transform var(--transition-base), background var(--transition-fast);
}

#faq details[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
  background: var(--gradient-accent);
  color: #1a2433;
}

#faq summary:hover {
  background: rgba(242, 177, 52, 0.06);
  color: var(--color-primary);
}

#faq details p {
  padding: 0 22px 18px;
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
  animation: fade-slide-in 0.35s ease both;
}

/* ============ HOWTO ============ */
#howto ol {
  counter-reset: howto-step;
  list-style: none;
  padding-left: 0;
}

#howto ol li {
  position: relative;
  padding: 12px 16px 12px 54px;
  margin-bottom: 10px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

#howto ol li::before {
  counter-increment: howto-step;
  content: counter(howto-step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: #1a2433;
  background: var(--gradient-accent);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(242, 177, 52, 0.35);
}

#howto ol li:hover {
  transform: translateX(4px);
  border-color: rgba(242, 177, 52, 0.4);
  box-shadow: var(--shadow-sm);
}

#howto ul li {
  padding-left: 4px;
}

/* ============ CONTACT ============ */
#contact ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
}

#contact ul li {
  position: relative;
  margin: 0;
  padding: 14px 18px 14px 44px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#contact ul li::before {
  content: "●";
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent);
  font-size: 0.7rem;
}

#contact ul li:hover {
  transform: translateY(-3px);
  border-color: rgba(242, 177, 52, 0.45);
  box-shadow: var(--shadow-sm);
}

/* ============ SITEMAP & LINKS ============ */
#sitemap ul,
#links ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#sitemap li,
#links li {
  margin: 0;
}

#sitemap a,
#links a {
  display: inline-block;
  padding: 7px 16px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--color-text-soft);
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
}

#sitemap a:hover,
#links a:hover {
  background: var(--gradient-accent);
  color: #1a2433;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(242, 177, 52, 0.35);
}

/* ============ FOOTER ============ */
#site-footer {
  position: relative;
  margin-top: 48px;
  padding: 48px 20px 32px;
  background: var(--gradient-hero);
  color: rgba(255, 255, 255, 0.85);
  overflow: hidden;
}

#site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(242, 177, 52, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 15% 85%, rgba(58, 110, 165, 0.25) 0%, transparent 45%);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer-inner p {
  margin: 0 0 10px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.88rem;
  line-height: 1.8;
}

.footer-inner p:first-child {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-inner p:last-child {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ============ BACK TO TOP ============ */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  width: 52px;
  height: 52px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--gradient-hero);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), box-shadow var(--transition-fast);
  font-family: inherit;
  line-height: 1.2;
}

#back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: var(--shadow-lg), 0 0 0 4px rgba(242, 177, 52, 0.25);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1080px) {
  #main-nav a {
    padding: 8px 9px;
    font-size: 0.84rem;
  }
  .site-search input {
    width: 130px;
  }
}

@media (max-width: 960px) {
  :root {
    --header-height: 64px;
  }

  .header-inner {
    gap: 12px;
    padding: 10px 16px;
  }

  #main-nav {
    order: 3;
    flex-basis: 100%;
    justify-content: flex-start;
    display: none;
  }

  #main-nav.is-open {
    display: flex;
    animation: fade-slide-in 0.3s ease both;
  }

  #main-nav ul {
    padding: 8px 0;
    gap: 2px;
  }

  #main-nav a {
    font-size: 0.85rem;
    padding: 8px 12px;
  }

  #menu-toggle {
    display: inline-block;
  }

  .site-search input {
    width: 120px;
  }

  .hero-section {
    padding: 36px 24px 28px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  main > section {
    padding: 28px 22px 24px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 8px 12px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .brand-logo svg {
    width: 36px;
    height: 36px;
  }

  .header-tools {
    gap: 6px;
  }

  .site-search {
    display: none;
  }

  #theme-toggle,
  #menu-toggle {
    padding: 8px 12px;
    font-size: 0.78rem;
  }

  main {
    padding: 0 12px 60px;
  }

  .breadcrumb {
    padding: 14px 0 6px;
    font-size: 0.78rem;
  }

  .hero-section {
    padding: 28px 18px 22px;
    border-radius: var(--radius-md);
  }

  .hero-carousel {
    min-height: auto;
  }

  .hero-slide h1 {
    font-size: 1.5rem;
  }

  .hero-slide p {
    font-size: 0.9rem;
  }

  .hero-slide .cta-button {
    padding: 11px 24px;
    font-size: 0.9rem;
  }

  .hero-stats {
    gap: 10px;
    margin-top: 24px;
    padding-top: 20px;
  }

  .stat-item {
    padding: 12px 6px;
  }

  .stat-number {
    font-size: 1.4rem;
  }

  .stat-item span:last-child {
    font-size: 0.72rem;
  }

  .anchor-nav {
    top: var(--header-height);
    padding: 8px 10px;
    border-radius: var(--radius-md);
  }

  .anchor-nav a {
    padding: 5px 11px;
    font-size: 0.76rem;
  }

  main > section {
    padding: 22px 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 18px;
  }

  main > section > h2 {
    padding-bottom: 12px;
    margin-bottom: 16px;
  }

  main > section > h2::after {
    width: 48px;
    height: 3px;
  }

  #news article,
  #articles article {
    padding: 16px 16px;
  }

  #faq summary {
    padding: 14px 46px 14px 16px;
    font-size: 0.92rem;
  }

  #faq details p {
    padding: 0 16px 14px;
    font-size: 0.88rem;
  }

  #howto ol li {
    padding: 10px 12px 10px 48px;
    font-size: 0.9rem;
  }

  #contact ul {
    grid-template-columns: 1fr;
  }

  .author-box {
    padding: 16px 18px;
  }

  #back-to-top {
    right: 14px;
    bottom: 14px;
    width: 46px;
    height: 46px;
    font-size: 0.66rem;
  }

  #site-footer {
    padding: 36px 16px 24px;
  }

  .footer-inner p {
    font-size: 0.8rem;
  }
}

@media (max-width: 380px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }
  .brand-name {
    font-size: 0.95rem;
  }
}

/* ============ ACCESSIBILITY / MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --color-border: rgba(31, 58, 95, 0.35);
    --color-text-soft: #2d3748;
  }
  [data-theme="dark"] {
    --color-border: rgba(157, 184, 220, 0.4);
    --color-text-soft: #d4dde9;
  }
}

@media print {
  #site-header,
  .anchor-nav,
  #back-to-top,
  .carousel-controls,
  .hero-stats {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  main > section {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
    animation: none;
  }
  a {
    color: #000;
    text-decoration: underline;
  }
}
</style>